After installing iTunes 11.2.1, I’ve verified that I can re-enable Find My Mac and not have /Users or /Users/Shared vanish. The permissions on /Users were also still correct following the installation. To verify that the fix sticks, I rebooted several times and observed that the visibility and permissions for /Users and /Users/Shared stayed what they should be.

What this script does is look for the /Users and /Users/Shared directory. If found, the directories are unhidden. A permissions repair is then run using the diskutil command to fix the world-writable permission issue for the /Users directory.

Note: The permissions repair may take up to 10 minutes to run.

Once the script is run, the /Users folder should be visible again.

It is important that Find My Mac be disabled before the permissions fix is run and also that Find My Mac remain disabled. If Find My Mac is re-enabled, the /Users and /Users/Shared folder will disappear again and /Users will revert to being world-writable.

Hum, has iTunes been pulled from Software Update? I used the Combo updater to go from 10.9.2 to 10.9.3 on a mid-2011 Mini, and everything is working great. However, when I now check the MAS for an update to iTunes, nothing is showing up. I’m still on iTunes 11.1.5. It’s no problem to download manually, just curious why I’m not seeing it via SU/MAS.